Wing commander Sen carried out a through project study for setting up of 35 mm movie projection system in the Air Force Academy from Air Force Welfare Funds, Funds generated from this venture were channeled towards construction of an open Air Theater, which again was designed by Wing Commander Sen after a second project study. The personal interest taken by him in contacting Local Government and private agencies for release of steel, cement, and other restricted quota items, and getting the project going with rapidity speaks highly of his initiative. The theater, the construction was started in December, 1973, was ready for operation on 1st April, 1974, largely due to consistent interest taken by Wing Commander Sen. He has also designed and locally fabricated a Kiran Wireless Trainer for training wireless mechanics on Kiran signals installation.

The dedicated work, drive and leadership of Wing Commander Sen was largely instrumental in ensuring establishment of sound and effective signal echelon at Air Force Academy. His consistent zeal to execute all assignments from inception to successful frutition, made heavy demands on him well beyond the call of duty. He has rendered distinguished service of a high order.